<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    body{
        background-color: black;
    }
    .loader {
    animation: rotate 1s infinite;
    height: 50px;
    width: 50px;
  }

  .loader:before,
  .loader:after {
    border-radius: 50%;
    content: "";
    display: block;
    height: 20px;
    width: 20px;
  }
  .loader:before {
    animation: ball1 1s infinite;
    background-color: #fff;
    box-shadow: 30px 0 0 #ff3d00;
    margin-bottom: 10px;
  }
  .loader:after {
    animation: ball2 1s infinite;
    background-color: #ff3d00;
    box-shadow: 30px 0 0 #fff;
  }

  @keyframes rotate {
    0% { transform: rotate(0deg) scale(0.8) }
    50% { transform: rotate(360deg) scale(1.2) }
    100% { transform: rotate(720deg) scale(0.8) }
  }

  @keyframes ball1 {
    0% {
      box-shadow: 30px 0 0 #ff3d00;
    }
    50% {
      box-shadow: 0 0 0 #ff3d00;
      margin-bottom: 0;
      transform: translate(15px, 15px);
    }
    100% {
      box-shadow: 30px 0 0 #ff3d00;
      margin-bottom: 10px;
    }
  }

  @keyframes ball2 {
    0% {
      box-shadow: 30px 0 0 #fff;
    }
    50% {
      box-shadow: 0 0 0 #fff;
      margin-top: -20px;
      transform: translate(15px, 15px);
    }
    100% {
      box-shadow: 30px 0 0 #fff;
      margin-top: 0;
    }
  }
  
</style>
<body>
    <span class="loader"></span>
</body>
</html>